Crystal structure of (diphenyl)(morpholino)phosphiniminocyclotrithiazene

The title compound (C6H5)2(OC4H8N)P=N-S 3N3 crystallizes in the space group P1̄ with unit cell parameters a = 9.3900(2), b = 9.4747(1), c = 11.3850(3) Å, α = 95.73(4), β = 96.85(6), γ = 104.26(2)°, and Z = 2. The tricoordinated sulfur of the cyclotrithiazene ring deviates from the mean plane of other skeletal atoms by 0.683(4) Å. The angle at this atom is the smallest in the ring and is enclosed by the longest S-N bonds observed in the ring.